National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

4°C

40°F

Humidity 68%
Wind Speed SW 13 km/h
Barometer 29.92 in
Dewpoint -1°C (31°F)
Visibility 16 km
Wind Chill2°C (35°F)
Last update 24 Mar 5:15 am CDT
Extended Forecast for

Gillespie IL

  • Today

    Today: Increasing clouds, with a high near 14. West wind 11 to 16 km/h increasing to 19 to 24 km/h in the morning. Winds could gust as high as 40 km/h.

    High: 14 °C

    Increasing
    Clouds

  • Tonight

    Tonight: A 40 percent chance of showers, mainly before 2am. Cloudy, then gradually becoming partly cloudy, with a low around 5. West wind 8 to 11 km/h becoming east in the evening.

    Low: 5 °C

    Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 16. East wind 8 to 18 km/h becoming west in the morning.

    High: 16 °C

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers. Partly cloudy, with a low around 3. Northwest wind 10 to 13 km/h.

    Low: 3 °C

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 15. Northwest wind 10 to 16 km/h.

    High: 15 °C

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 4.

    Low: 4 °C

    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers. Partly sunny, with a high near 17.

    High: 17 °C

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 10.

    Low: 10 °C

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 24.

    High: 24 °C

    Chance
    T-storms

Detailed Forecast

Today
Increasing clouds, with a high near 14. West wind 11 to 16 km/h increasing to 19 to 24 km/h in the morning. Winds could gust as high as 40 km/h.
Tonight
A 40 percent chance of showers, mainly before 2am. Cloudy, then gradually becoming partly cloudy, with a low around 5. West wind 8 to 11 km/h becoming east in the evening.
Tuesday
Mostly sunny, with a high near 16. East wind 8 to 18 km/h becoming west in the morning.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 3. Northwest wind 10 to 13 km/h.
Wednesday
Sunny, with a high near 15. Northwest wind 10 to 16 km/h.
Wednesday Night
Partly cloudy, with a low around 4.
Thursday
A 50 percent chance of showers. Partly sunny, with a high near 17.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 10.
Friday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 24.
Friday Night
A 40 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 14.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 22. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 14. Chance of precipitation is 70%.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 20.
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ABOUT THIS FORECAST

 
Point Forecast:
Gillespie IL
 39.12°N 89.81°W (Elev. 653 m)
Last Update:
5:06 am CDT Mar 24, 2025
Forecast Valid:
5am CDT Mar 24, 2025-6pm CDT Mar 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation